A ddaeth unrhyw un ar draws term Cymraeg, tybed?  Dyma'r disgrifiad yn Saesneg:
"Interventional procedures refer to a procedure used for diagnosis or treatment of a patient which involves making a cut or hole to gain access to the inside of the patient's body (eg an operation), gaining other access to a body cavity (eg via an endoscope inserted via the mouth), and using electromagnetic radiation (eg x-ray)."
Diolch am unrhyw gymorth.

Ken Owen